Altra Mont Blanc Speed is a lightweight, performance-focused trail running shoe designed for technical terrain. It pairs a dual-density Altra EGO midsole with a Vibram LiteBase + Megagrip outsole for fast, confident traction on varied surfaces. Key attributes: White | Fiery coral | Blue | Vibram LiteBase outsole with Megagrip for traction on wet and dry terrain | Dual-density midsole: Altra EGO MAX (rim) + Altra EGO PRO (core) for responsive cushioning | High stack height (29 mm) and low weight for a fast ride | Zero-drop platform for a natural stride | StoneGuard TPU underfoot protection | Lightweight, breathable upper | Roomy toe box for natural toe splay | Extended lining and padded tongue for comfort | Racing-oriented, streamlined silhouette | Dimensions fit: Sole height: 29 mm | Weight: 286 g | Zero drop (0 mm heel-to-toe) | FootShape™ fit: Standard | Sizing note: Altra recommends ordering 1/2 size larger than a dress shoe